Overflow for sinks



Nov. 28, 1933. F, -r 1,937,311

OVERFLOW FOR SINKS Filed Oct. 31, 1951 gwflf f;

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INVENTOR BY %m M ATTORNEY Patented Nov. 28, 1933 UNITED STATES PATENT OFFICE Application October 31,

3 Claims.

My invention relates to improvements in overflows for sinks. My object is to provide an overflow for a sink of the type which has two or more compartments or basins, and to position the drain from this overflow in the interior of the partition between the basins. A further object is to provide suitable connections from said overflow to the drain pipe leading from the customary sink strainer.

I attain these objects by the mechanism illustrated in the accompanying drawing, in which Figure 1 is a vertical section of the sink and overflow, and Fig. 2 is a perspective of the sink with the front portion broken away, showing the overflow. Similar numerals refer to similar parts throughout the several views.

In the drawing the numeral 1 indicates the sink which has two or more compartments or basins 2 divided by a partition 3. This partition is cast in the form of a double wall leaving a space 4 between the walls, and is provided with overflow openings 5 from each basin of the sink. These openings lead into an overflow channel 6 which is cast or otherwise formed between the walls of the partition 3 and abuts and forms a water-tight connection therewith. This channel may be of any suitable shape such as that shown by the dotted lines of Fig. 2, and is preferably cast integral with the sink by the use of a suitable core. The bottom portion of the channel 6 is formed into a circular shaped overflow 7 which is threaded to receive the nut 8. An outlet pipe 9 fits in the outlet 7 and is held in place by the compression of the nut 8 on the resilient gasket 10 which forces the gasket inwardly and clamps the pipe in place, forming what is known in the art as a slip joint. There is thus provided an adjustable joint whereby slight variations in the length of the overflow pipe 9 may be compensated for.

The sink is provided with strainers 11 and 12 which fit in suitable outlet apertures of the sink. These strainers may be of any suitable type such as that shown in the drawing, which is a comparatively large diameter rapid draining strainer. My invention, however, is readily adaptable to practically any of the common types of strainers.

In the practice of my invention one of these strainers is equipped with an exteriorly threaded tubular outlet 13 depending below the sink. The nut 14 which flts on the exteriorly threaded portion 13 of the strainer has an interiorly threaded portion 15 to which is threaded the drain pipe 16 leading to the customary trap 17. The nut 14 is provided with an extension 18 having a channel 19 opening into the bore of the nut 14. The extension 18 is provided with a threaded portion 20 upon which a nut 22 fits. An extension of the nut 22 engages the shoulder 21 of the overflow pipe 9. A gasket 23 completes the connec- 1931. Serial No. 572,254

tion, and makes a water-tight connection when the nut 22 is drawn up tightly.

The operation of the device will be readily understood. Inasmuch as the overflow openings 5 are below the rim of the sink, the water will overflow into them at a point before the sink is completely filled and will pass downward through the overflow pipe 9, channel 19 into the drain pipe 16, and thence outward through the customary trap.

It will thus be seen that I have provided an overflow for a sink which is positioned in the partition of the sink and leads into the regular drain pipe, and one which is effective, simple in construction and operation, and which drains directly into the customary drain of the sink, thus making use of the same trap facilities.

While I have described my invention with particular reference to its use on a sink, it is also adaptable to use on similar constructions such as laundry trays, combinations of laundry trays and sinks, etc., and it will be understood that they are considered as equivalents of the term sink wherever used in the specification or claims.

I claim:

1. In combination, a sink, a partition forming a plurality of basins in said sink and comprising an overflow channel in communication with said basins, a strainer positioned in one of the aforesaid basins and having a portion depending therefrom, an annular nut connected to said depending portion, a drain pipe connected to said nut, an annular extension on said nut, said extension having communication with the bore of said nut, and an overflow pipe connected to said extension and having slip joint connection to said overflow channel.

2. In combination, a sink, a partition therein comprising an overflow channel, a strainer positioned in said sink, means for connecting said strainer to a drain pipe, said connecting means comprising an extension in communication with said drain pipe, means for connecting said extension to said overflow channel and a slip joint connection between said connecting means and said overflow channel.

3. In combination, a sink, a partition therein comprising an overflow channel, a strainer positioned in said sink, means for connecting said strainer to a drain pipe, said connecting means comprising an extension in communication with said drain pipe, and an overflow pipe connecting said extension and said overflow channel.

FRANK G. BROTZ. 

